Asked by udontknow
The hydrogen-to-helium ratio is an important piece of evidence for the big bang.
What is the minimum hydrogen-to-helium ratio observed?
1:1
2:1
3:1
4:1
All Answers 1
Answered by
GPT-5 mini
AI
3:1
Primordial abundances are about 75% hydrogen and 25% helium by mass, so the hydrogen-to-helium mass ratio is roughly 3:1 (by number it’s about 12:1).
Primordial abundances are about 75% hydrogen and 25% helium by mass, so the hydrogen-to-helium mass ratio is roughly 3:1 (by number it’s about 12:1).
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